[PATCH v1 2/3] MdeModulePkg/NvmExpressDxe: Always copy CQ entry to PassThru packet

[Hao Wu <hao.a.wu@intel.com>]

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=1259

According to the the NVM Express spec Revision 1.1, for some commands,
command-related information will be stored in the Dword 0 of the
completion queue entry.

One case is for the Get Features Command (Section 5.9.2 of the spec),
Dword 0 of the completion queue entry may contain feature information.

Hence, this commit will always copy the content of completion queue entry
to the PassThru packet regardless of the execution result of the command.

Cc: Liangcheng Tang <liangcheng.tang@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
---
 MdeModulePkg/Bus/Pci/NvmExpressDxe/NvmExpressPassthru.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/MdeModulePkg/Bus/Pci/NvmExpressDxe/NvmExpressPassthru.c b/MdeModulePkg/Bus/Pci/NvmExpressDxe/NvmExpressPassthru.c
index bfcd349794..c52e960771 100644
--- a/MdeModulePkg/Bus/Pci/NvmExpressDxe/NvmExpressPassthru.c
+++ b/MdeModulePkg/Bus/Pci/NvmExpressDxe/NvmExpressPassthru.c
@@ -781,17 +781,16 @@ NvmExpressPassThru (
     } else {
       Status = EFI_DEVICE_ERROR;
       //
-      // Copy the Respose Queue entry for this command to the callers response buffer
-      //
-      CopyMem(Packet->NvmeCompletion, Cq, sizeof(EFI_NVM_EXPRESS_COMPLETION));
-
-      //
       // Dump every completion entry status for debugging.
       //
       DEBUG_CODE_BEGIN();
         NvmeDumpStatus(Cq);
       DEBUG_CODE_END();
     }
+    //
+    // Copy the Respose Queue entry for this command to the callers response buffer
+    //
+    CopyMem(Packet->NvmeCompletion, Cq, sizeof(EFI_NVM_EXPRESS_COMPLETION));
   } else {
     //
     // Timeout occurs for an NVMe command. Reset the controller to abort the
-- 
2.12.0.windows.1